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Lasser, J., Nield, J.M., Ernst, M., Karius, V., Wiggs, G.F.S., Threadgold, M.R., Beaume, C. and Goehring, L. 
ORCID: 0000-0002-3858-7295,
2023.
Salt polygons and porous media convection.
Physical Review X, 13: 011025.
ISSN 2160-3308
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1736314_Goehring.pdf - Published version Download (5MB) | Preview |
Abstract
From fairy circles to patterned ground and columnar joints, natural patterns spontaneously appear in many complex geophysical settings. Here, we investigate the origins of polygonally patterned crusts of salt playa and salt pans. These beautifully regular features, approximately a meter in diameter, are found worldwide and are fundamentally important to the transport of salt and dust in arid regions. We show that they are consistent with the surface expression of buoyancy-driven convection in the porous soil beneath a salt crust. By combining quantitative results from direct field observations, analog experiments, and numerical simulations, we further determine the conditions under which salt polygons should form, as well as how their characteristic size emerges.
| Item Type: | Journal article | ||||||
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| Publication Title: | Physical Review X | ||||||
| Creators: | Lasser, J., Nield, J.M., Ernst, M., Karius, V., Wiggs, G.F.S., Threadgold, M.R., Beaume, C. and Goehring, L. | ||||||
| Publisher: | American Physical Society | ||||||
| Date: | 24 February 2023 | ||||||
| Volume: | 13 | ||||||
| ISSN: | 2160-3308 | ||||||
| Identifiers: |
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| Rights: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society. | ||||||
| Divisions: | Schools > School of Science and Technology | ||||||
| Record created by: | Laura Ward | ||||||
| Date Added: | 27 Feb 2023 12:05 | ||||||
| Last Modified: | 27 Feb 2023 12:05 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/48420 |
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